Awl.



No. 829,154. y PATENTBD 11116.21, 1906. y(gl: L. HULT.

'AWL.

APPLIUATIDN FILED PBB.8.190B.

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l i To AatZZ vwhom UNITED sragrns I TENT OFFICE.

GRDNER L. HOLT, OF HARTFORD, CONNECTICUT.

' i AwL.

)uit 3.

Be.it:.known'that I, GARDNER L. HoL'r, of theeity andcounty of Hartford and State of Connecticut,.haveinvented certain new and useful Improvements in Awls, which improveniente?.areA described in the following specification'and are illustrated by the accompanying drawings.

y invention relates to awls and similar ttols in general and to brad-awls in particu ar.

It is the object and pur ose of the invention to produce between tfie blade and handle of such an implement a firm andreliable engagement which will permit a ready assemling and disassembling of the parts of the tool with a view to the removal and substitution of interchangeable blades as breakage, wear, or changing use may suggest. To accomplish this object, I use a tapering split sleeve which engages the shank of the blade in a eculiar manner and is fastened into the hui le of the tool while so engaging that The accompanying drawings show the best manner in which I have contemplated applythe principles of the invention.

i e 1 is a partly sectional side elevation of a rad-awl which is constructed in accordance with those principles. Fig. 2 is an en- Speccaton of Letters Patent.

Application died February 8,1906. Serial No. 300,062.

it may concern: I

larged cross-sectional view of the same bradaw on section-line 2 2 of Fig. 1. Fig. 3 is an axial section of such brad-awl in a modified form. Fi 4 is a cross-section on sectionline 4 4 of ig. 3. Fig. 5 is a detail.

In the drawings thc numeral 1 denotes the awl-handle, which is made of wood or other slightly-elastic material, is of any ordinary or convenient form, and is provided in the usual manner with a ferrule 3 and an axial bore 5. The blade of the awl is denoted by the numeral 6. It consists of a pointed steel rod provided with feathers 7, struck out on op osite sides of the blade-shank- Blade 6` as an externally-tapering sleeve o r bushing 10, having a air of internal sockets 9, which are occupied y said feathers 7, as shown. This tapering sleeve being split in an axial plane consists of two equal similar contiguous separable half-sleeves 10, inclosing between them the shank of blade 6. Fig. 5 is a separate view of one of these two half-sleeves. The chamber 1 1 of sleeve 10 terminates Within that sleeve, as shown in Fi 1, 3, and 5, and leaves that member soliJ as an abutment, behind blade 6. Near its smaller end Patented Aug. 21, 1906.

thesame tapering sleeve is made flat on opposite sides parallel to said axial plane, as shown in. Figs. l and 2 and 4. Inits middle and larger' portion the same sleeve is externally hexagonal orl otherwise angular in cross-.seetion, as shown in Figs. 2 and 4.- At its forward end it has a head 12 of general cylindrical form,.which is a trifle larger than the opening through ferrule 3 into the handlebore 5.

In that modification of my invention which is shown in Figs. 3 and 4 each socket 9 instead of being formed as in Figs. 1, 2, and 5 wh olly within a single half-sleeve 1() is formed partly in each of two such half-sleeves contiguous to each other. In that case the feathers 7 lie between the two halves of sleeves 10.

To assemble the tool which is above described, the blade 6 is first inserted between the separable halves of sleeve 10 in such a position that the shank of that blade reaches to the bottom or inner end of chamber 11, while feathers 7 occupy their respective sockets 9. Then the tapering sleeve is forcibl driven into hand1e-bore 5 until its two ,ha f-sleeves 10 are wedged firmly together in that bore and until head 12 in the effort to enter the orifice of ferrule 3 has introverted the edges of that orifice, as shown in Figs. 1 and 3, and has compressed the yielding material of the handle against sleeve 8 within and behind that ferrule. Then a hole 13 is drilled throu h handle 1 and the flattened Shanks of half-sieves 10 continuously, as shown in Figs. 1 and 3. A cross-pin 14 is then inserted removably in hole 13. To disassemble the awl, the pin 14 is first withdrawn from hole 13. Then sleeve 10 is seized by its head 12 and forcibly drawn out of the handle. Thereupon the separable halves of that sleeve fall apart and are ready to take a new or interchangeable blade 6 and to be reassembled in the handle as before.

Such being the construction and manipulation of my improved brad-awls and similar tools, the mode of operation of the same involvescertain mechanical advantages which will now be pointed out. As the cross-pin14 and the external angles of sleeve 10 separately as Well as conjointly resist all twis of that sleeve in handle 1 and as feathers 7, seated in sockets 9, resist all rotatory t of blade 6 in that sleeve, it results that twisting of the blade in the handle is effectually prevented by the cooperative action of said sleeve-angles, cross-pin shankffeathers, and sleeve-sockets, and, similarly, as yferrule 3 head 12, and pin 14 conjointl resist the backward thrust of sleeve 1() in andle 1 and as feathers 7, inclosed in sockets 9, and the solid abutment in the sleeve 10 conjointly resist all backward thrust Yof blade 6 in sleeve 10 it results that all backward drive of blade 6 in handle 1 is eiiectuall prevented by the co erative action of sai ferrule, head, pin, feat ers, sockets, and abutment.

Such being the construction and mode of internal operation of my improved brad-awls and similar tools, I claim as my invention- 1. In-a brad-awl, or similar tool, having a wooden handle, which is provided with an axial bore "and a metallic ferrule, a blade, which is provided with pro'eoting feathers, in combination with an an u ar, taperin split sleeve, which is provide with interna sockets, containi said feathers, incloses the shank of said liade, has an internal abutment, stopping said blade, and an enlarged head engaging said ferrule, and is driven into said axial bore and removably pinned to said handle.

2. In a brad-awl, or similar tool, an axially-bored handle,ofwood or like material, and a blade which has a feathered shank, in combination with an intermediate split and tapering sleeve, which hugs said feathered shank, and is driven into said handle, and pinned to ether therein.

3. In a rad-awl, or similar tool, a feathered blade, and a bored handle, in combination'l with an intermediate split sleeve, which hu s the feathered blade, and is both held to.- get er and fastened non-rotatably in its position in the handle by means of a pin through both sleeve and handle.

In testimony whereof I hereunto sot my name in the presence of two witnesses.

GARDNER, L. HOLT. f

Witnesses:

WILLARD EDDY, A. M. HOLT. 

